diff --git a/configure b/configure
index 1aba38c3d84..56e6030f345 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.in Revision: 78194 .
+# From configure.in Revision: 78467 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.61 for python 2.7.
 #
@@ -25582,6 +25582,9 @@ ucs4) unicode_size="4"
 _ACEOF
 
       ;;
+*) { { echo "$as_me:$LINENO: error: invalid value for --enable-unicode. Use either ucs2 or ucs4 (lowercase)." >&5
+echo "$as_me: error: invalid value for --enable-unicode. Use either ucs2 or ucs4 (lowercase)." >&2;}
+   { (exit 1); exit 1; }; } ;;
 esac